Volume 2 - Atomic Energy Regulatory Board

1. SAFETY SYSTEMS/INTERLOCKS (CONTD.)
S.
No.
Safety
system/
Interlock
Test
conducted
Expected response of
control system
Observed
response
of
control
system
4.
Service keyes
at different
locations(to be
tested
separately)
Operated to
select
maintenance
position
1. Emergency alarm should sound,
message to be displayed on the
monitor and a hard copy to be
obtained
2. Source, if exposed should lower and
the conveyor should stop, if ON.
3. Search should get cancelled
4. Search can not be started or
conducted if the emergency persists
1. Emergency alarm should sound,
message to be displayed on the
monitor and a hard copy to be
obtained
2. Source, if exposed should lower and
the conveyor should stop, if ON.
3. Search should get cancelled
4. Search can not be started or
conducted if the emergency persists
1. Emergency alarm should sound,
message to be displayed on the
monitor and a hard copy to be
obtained
2. Source, if exposed should lower and
the conveyor should stop, if ON.
3. Search can not be started or
conducted if the emergency persists
1. Message to be displayed on the
monitor and a hard copy to be
obtained
2. Emergency alarm should sound
3. Source if exposed should lower and
the conveyor should stop, if ON.
4. Search can not be started or
conducted if the emergency persists
5. Hydraulic motor should stop.
5.
Source raise
wire rope
tension
Simulated by
actuating the
limit switches
which sense
the rope
stretch and
break
condition
6.
Cell exhaust air
flow
Simulated the
condition by
stopping the
exhaust fan
7.
Hydraulic oil
level low
Simulated by
manually
actuating the
oil level
switch
99